In short, nowhere near them.
Disney was clearly going for a “look” with the OT. That look being “gritty” I guess?
All three films have been deliberately desaturated and darkened by the colorist. They are much flatter and darker than they should be.
In addition, each film (with the exception maybe of ANH) has a color hue that has been added to it.
For Empire it’s pushed to blue/green, which supposedly makes it look colder (and no this has nothing to do with the debate about how blue Hoth should be its something completely new).
For Jedi it’s pushed to red, which makes Endor look very brown and earthy in comparison to how it has looked in previous releases. Again a deliberate choice of the colorist.
However it’s not all bad news. Generally the shot to shot timing across all films are consistent (with the exception of Empire whose reel 1 is all sorts of fucked up). So a single correction can be applied to each film which vastly improves the color timing and brings it close to how it should look or did look in the theatre (optical printing and print stock color pushes aside).
We’ve already done this for ROTJ Destiny and we’re doing it now for Empire. We’re making improvements to brightness and saturation and removing the hues that have been added.
Here are some screenshots of Jedi after the Disney color issues have been reversed